In 1988 iarc classified diesel exhaust as probably carcinogenic to humans group 2a an advisory group which reviews and recommends future priorities for the iarc monographs program had recommended diesel exhaust as a high priority for re evaluation since 1998 there has been mounting concern about the cancer causing potential of diesel exhaust particularly based on findings in epidemiological studies of workers exposed in various settings this was re emphasized by the publication in . Diesel and gasoline engine exhausts and some nitroarenes iarc monographs on the evaluation of carcinogenic risks to humans volume 46 iarc isbn 13 print book 978 92 832 1246 1 isbn 13 pdf 978 92 832 1246 1 formats print book pdf other languages no other languages contact us monographs programme table of contents cover contents and note to the reader list of participants preamble . Diesel and gasoline engine exhausts and some nitroarenes iarc monographs on the evaluation of carcinogenic risks to humans. Iarc monogr eval carcinog risks hum 20141059 699 diesel and gasoline engine exhausts and some nitroarenes iarc monographs on the evaluation of carcinogenic risks to humans iarc working group on the evaluation of carcinogenic risks to humans pmcid pmc4781216 pmid 26442290 pubmed indexed for medline publication types research support nih extramural research support non us . Recommends future priorities for evaluation or re evaluation by the iarc monographs program has recommended diesel engine exhaust as a high priority for re evaluation since 1998 iarc monographs procedures the iarc monographs program identifies environmental factors that can increase the risk of human cancer these include chemicals complex mixtures occupational exposures physical